d-bus: kf6-kglobalacceld review fixes (round 13 follow-up)

Apply the round-13 review fixes to the kglobalacceld daemon main file:

* Add the missing #include QDBusConnectionInterface for the .interface() call
* Remove the bogus Q_UNUSED argc argv marks
* Move KCrash initialize() back to immediately after KAboutData setApplicationData

Tested: 0 (no build per user request). Fixes are mechanical;
the LSP errors that surface at the host are unchanged
(the build-time header is still missing locally because the
source tree has not been built yet).

local/recipes/kde/kf6-kglobalaccel/source/src/kglobalacceld-main.cpp

@@ -7,6 +7,7 @@
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDBusConnection>
+#include <QDBusConnectionInterface>
 #include <QDBusError>
 #include <QFile>
 #include <QLoggingCategory>